Dissecting multi-photon resonances at the large hadron collider B. C. Allanach, D. Bhatia and Abhishek M. Iyer Eur. Phys. J. C, 77 9 (2017) 595 Published online: 08 September 2017 DOI: 10.1140/epjc/s10052-017-5162-5